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- #
- # Copyright (C) 2014-2015 OpenWrt.org
- #
- linksys_get_target_firmware() {
- local cur_boot_part mtd_ubi0
- cur_boot_part=`/usr/sbin/fw_printenv -n boot_part`
- if [ -z "${cur_boot_part}" ] ; then
- mtd_ubi0=$(cat /sys/devices/virtual/ubi/ubi0/mtd_num)
- case $(egrep ^mtd${mtd_ubi0}: /proc/mtd | cut -d '"' -f 2) in
- kernel1|rootfs1)
- cur_boot_part=1
- ;;
- kernel2|rootfs2)
- cur_boot_part=2
- ;;
- esac
- >&2 printf "Current boot_part='%s' selected from ubi0/mtd_num='%s'" \
- "${cur_boot_part}" "${mtd_ubi0}"
- fi
- case $cur_boot_part in
- 1)
- fw_setenv -s - <<-EOF
- boot_part 2
- bootcmd "run altnandboot"
- EOF
- printf "kernel2"
- return
- ;;
- 2)
- fw_setenv -s - <<-EOF
- boot_part 1
- bootcmd "run nandboot"
- EOF
- printf "kernel1"
- return
- ;;
- *)
- return
- ;;
- esac
- }
- linksys_get_root_magic() {
- (get_image "$@" | dd skip=786432 bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
- }
- platform_do_upgrade_linksys() {
- local magic_long="$(get_magic_long "$1")"
- mkdir -p /var/lock
- local part_label="$(linksys_get_target_firmware)"
- touch /var/lock/fw_printenv.lock
- if [ ! -n "$part_label" ]
- then
- echo "cannot find target partition"
- exit 1
- fi
- local target_mtd=$(find_mtd_part $part_label)
- [ "$magic_long" = "73797375" ] && {
- CI_KERNPART="$part_label"
- if [ "$part_label" = "kernel1" ]
- then
- CI_UBIPART="rootfs1"
- else
- CI_UBIPART="rootfs2"
- fi
- nand_upgrade_tar "$1"
- }
- [ "$magic_long" = "27051956" -o "$magic_long" = "0000a0e1" ] && {
- # check firmwares' rootfs types
- local target_mtd=$(find_mtd_part $part_label)
- local oldroot="$(linksys_get_root_magic $target_mtd)"
- local newroot="$(linksys_get_root_magic "$1")"
- if [ "$newroot" = "55424923" -a "$oldroot" = "55424923" ]
- # we're upgrading from a firmware with UBI to one with UBI
- then
- # erase everything to be safe
- mtd erase $part_label
- get_image "$1" | mtd -n write - $part_label
- else
- get_image "$1" | mtd write - $part_label
- fi
- }
- }
- platform_copy_config_linksys() {
- cp -f "$UPGRADE_BACKUP" "/tmp/syscfg/$BACKUP_FILE"
- sync
- }
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